function searChGirl(age: number, name: string): string {
  return `找到了${age}的小姐姐了呢? ${name}`
}

let resulte: string = searChGirl(12, '五渔村')
console.log(resulte)

function searChBoy(age: number, stature?: string): string {
  let yy:string = ''
  yy = `我找到了${age}`
  if(stature != undefined) {
    yy = yy + stature
  }
  return yy
}

let resulteBoy = searChBoy(22, '煞笔')
let resulteBoy2 = searChBoy(22)
console.log(resulteBoy)
console.log(resulteBoy2)